Liquid extractor



April 8, 1930. w. K. ACKERMAN LIQUID EXTRACTOR Filed Sept. 2, 1927 attains? Patented Apr. 8,193!) I 1 753 732 (um STATES" PATENT; OFFICE 7 Application filed September2, 1927. s al No. 217,052..

My invention aims to provide aliquid sepaandfout of engagement with the flaring side rator or extractor that may be-us'ed for re- Wall of the bottle neck, the superposed pismoving light liquids from heavy liquids, parton or pistons become active so that-there will ticularly those liquids which by flotation ac-. be a positive seal for, establishing a siphonic cumulate on. the surface of a heavy liquid. action for theremoval of cream from the It is in this connection that my invention has bottleneck. So the use of two or more pisbeen primarily designed for separating or tons is necessary fora safe, positive and quick 7 extracting cream from a milk bottle or like extraction of cream from a milk bottle. The receptacle. The device may be advantaadvantagesgained warrant the use of two or 1 geously used by housewives for obtaining more pistons, which being separately mount- 69 cream for various urposes, particularly ed on a siphonic member may be adjusted for cream that is-to be wiipped and cannot ina desired action in connection with a milk clude any skimmed milk. bottle. Then'again, the pistons 'may be in- My cream extracting or removing device tegral and in eachandjevery instance sani- 1 is constructed to provide a siphonic action tary and easily cleaned'material enters into when the device is placed in use and for this h tI l D Ofthe d vice. a v purpose a siphonic tube is equipped with My invention will be hereinafter specifipistons by which the mouth of a bottle or like cally described and then'olaimed and referreceptacle may be sealed and the cream forced en e wlll now be h to the g,' e e-.

upwardly into the siphonic tube until a si- 1 1 I v phonic action is established. I am aware lgure 1 IS a vertlcal sectional view of that a single piston may have been-used for the'cream extracting devlce in position relasuch a purpose, butwhen inserting such a IV to the mllk bottle and preparatory :to piston in the mouth ofthe milk bottle and a hshmg a slphonlc action;

' manipulating it therein, extreme care must Fig. 2 is a perspective view of thedevice be exercised to prevent the single pistonfrom Showing h m nner in which the main piston being tilted and the seal between the piston h n r ght llltO action .to remove the and bottlebroken. 'When such happens the uppermos Strata f Cream; 4 I cream is forced over the edge of the single g- S a VleW slmllalite lg- 1 Showing piston and, not upwardly into the siphonic the siphehie action established and the Pi member. The siphonic action is destroyed fi e eg e plis eii their purpose; and very often considerable cream is lost beg- 4 18 e slde elevatloh. 0f the hqllld eX- cause of the careless and uncertain manner l g device alone;

in which such a single piston is manipulated. g- 5 is a Similar View s g h l p .To, prevent such action I providea siphonic P n for the device, 5

neck. As the piston is forced downwardly armst} and 8 being suflicient to permit of the member with two pistons or more disposed in g 6 i a detail S e i View illustrating proximity toone another so that should one a modlfied f f P S e fle piston fail tomake a complete seal the other As an x p of one hquld that m y he piston will, :be brought into action. Then extreeted r o Q- another liquid, again, a double or multiple piston tends to thelels Wh t 9f e 1 0119; e -l ta steady and guide a siphonic member into'a Qf Wlhhlh a m h bo 'h bottle and because of the tapering or restrictgmdh y t e e ek. 4c telmlllatlng at ed shape of the bottle neck, one piston may a mouth or opening 5 whlch is adapted to be become inactive, but the other piston will Closed by 3 ap, d sk r 0t'l1er form of closure 1 immediately assume the duty of the inactive (h Illi e V piston and thus maintain the siphonic action. F01? m ving he cream from the bottle For instance, the first piston to enter the 2 I employ a gooseneck siphonic member havbottle neck will remove the uppermost strata ing ashort intake arm '6, a return bend 7 and of cream in the narrow portion of the bottle a long discharge arm 8, the space between the siphonic member being conveniently handled relative to the bottle 3, as clearly shown in Fig. 2. o The siphonic member may be made of glass, aluminum or any material that is light in weight and maybe maintained in a sanitary condition.

On the short arm 6 of the siphonic member are pistons 9 and 10placed in spaced or superposed relation. Each piston is made of a flexible or compressible material, as rubber, and each piston may have a relatively thin or rounded peripheral edge 11 and a sleeve or hub portion 12, although in some instances this sleeve or hub portionmay be dispensed with, as shown in Fig. 6, and the piston formed with convex faces providing a relatively thick center portion that may be frictionally fitted on the arm 6 or otherwise attached thereto. The long sleeve or hub portions afford sufficient surface for frictional engagement with the arm 6 so that the pistons 9 and 10 may be properly positioned on the arm 6 to fixedly remain in such position during manipulation of the siphonic member.

As shown in Figs. 1 and 2 the diameter of the pistons 9 and 10 slightly exceeds the inner diameter of the bottle neck 4 necessitating flexure or compression of the peripheral edges of the pistons when entering the bottle neck. This is in order that the bottle neck may be sealed and an operative degreeof compression produced on the cream. According to Fig. 1 the piston 9 isentering the bottle neck and it will be noted that the peripheral edges of this piston are flexed. With the piston maintained substantially horizontal and trans verse of the longitudinal axis of the bottle the piston may be moved downwardly in the bottle neckto force'the cream into the open end of the arm 6. Fig. 1 shows a small dis placement of cream from a bottle neck and the cream rising in the arm 6. It will be noted that the upper portion of the bottle neck is substantially cylindrical and conseinto sealed relation with the bottle neck.

3 quently the piston 9 may be forceddownwardly in the bottle neck some distance before said piston becomes inactive. It isrduring the downward movement of the piston that a sufficient quantity of cream has been displaced and forced upwardly in the arm 6,

through the bend 7 'to set up a siphonic action by which cream will continue toflow as shown inFig- Y. H

' If only a very small portion of cream is to a be removed from the milk bottle, the operator ofthe siphonifc membermay cease to force the piston 9into the bottle and immediately upon the open end of thearm6 being uncovered, the siphonic action will be broken.

- V 7 I will assume however, that all of the cream is to be removed and a downward movement 'oftheoarm 6 eventually brings the piston 10 By this time the piston 9 may have passed out of engagement with the bottle neck, thus leaving obtain a very small quantity of milk with the cream the bottle can be tilted to place milk in position so that a desired quantity thereof can be removed. This use is unusual, because my device is primarily designed for removing cream only.

In Fig. 5 I show a plurality of pistons 14 somewhat closely assembled and while these pistons'may be separate and simply adjoin one another, yet it is possible to make said pistons a unitary structure. The pistons will afiord a long bearing when enteringa bottle neck and should one or two of the "pistons fail to function the other piston is sufiicient These pistons will maintain the arm 6 in the longitudinal axis for thepurpose intended.

of the bottle and prevent tilting of the arm to one side or the other during a pumping action. If the arm is not properly moved into the bottle neck, cream may pass'an edge of the lowermost piston, but itwill be stopped by the next or following piston, therefore I have positive'means for establishing a seal with the bottle neck in order to raise enough cream to start a siphoni-c action.

The showing in Fig. 4 is suggestive of having the pistons 9 and 10 connected by a long sleeve to afford a unitary structure, but I be? lieve that material may be saved and better results obtained by having'the pistons 9 and l0 separated. For instance,'-there are various sizes andvkinds of milk bottlesor other receptacles, and when such are encountered the pistons 9"and 10 maybe adjusted relative to'each other to properly cooperate in the milk bottle. The use of two or more pistons possess a distinct advantage compared to a single piston, for the reason that many women do not understand the siphonic'action which necessi% tateskeepingthe lower end of the arm sub:- merged. If the lower piston is not submerged the siphonic action ,willbe stopped but with the second piston coming. into place and sealing the bottle neck air will be excluded from the bottle neck so that when the lower end of the arm is submerged the cream cannot rise outside of the arm, but must rise in the arm and thus setup asiphonic action. Also. any splashing that may be caused by the first or lower disk is intercepted by the upper disk and thus prevented from reaching the exterior of the bottle. f

Another feature of the present invention is that the disks are permanently fixed to the tube at the factory or place of assembly and received bythe customer in this condition.

This mode of assembly overcomes the possii bility of breaking the glass tube and injuring the hands of the user, which frequently occurs when the disk is supplied as a loose element 7 to be fitted on the tube by the user. This particular feature of the invention is valuable even in connection with a single disk device,

as will be readily apparent.

It is thought that the operation and utility of the liquid extracting device will be apparent Without further description, and while in the drawing there are illustrated the preferred embodiments of my invention, it is to be understood that the structural elements are susceptible to such variations and modifications as fall within the scope of the appended claims.

What I claim is -1. A liquid extractor adapted to be placed in a receptacle to remove liquid from the receptacle, said extractor comprising a siphon 7 member, and spaced pistons on said member adapted to be successively brought into engagement with the inner wall of the receptacle.

WILLIAM K. AGKERMAN. 

